Mold



June 16, 1925. 1,542,751

w. A. WILSON MOb-D Filed Jan. 2 1920 2 Sheets-Sheet 1 June 16, 1925. 1,542,751

W. A. WILSON MOLD Filed Jan. 2. 1920 2 Sheets-Sheet 2 Patented June 16, 1925.

PATENT OFFICE.

WALTER AUDAER WILSON, OF ARMLEY, LEEDS, ENGLAND.

MOLD.

Application filed January '2, 1920. Serial No. 348,838.

(GRANTED UNDER THE PROVISIONSOF THE ACT 01? MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that I, IVALTER AUDAER VVIL- SON, a subject of the King of Great Britain, residing in Armley, Leeds, in the county of York, Great Britain, have invented certain.

Improvements inMolds (for which I have filed application in Great Britain Apr. 3, 1915, No. 5,119), of which the following is a specification.

This invention relates to means for manufacturing radiants or fuel, so called, used in gas fires. A

, In constructing radiants for gas fires, which radiants are gene-rally made from a suitable clay, or othermaterial, the usual method has been to make a radiant in halves, which are joined together before being burned in a kiln. This method has its advantages in that roughness, ribs, projections, studs, or the like, canbe readily constructed, or formed, on the interiorof the radiant. In other cases, the radiant has been made in one piece on one or more center pins, which gave a. stronger construction, but did not permit studs to be formed onthe inside;

When roughness, orany projection, was desired, it usually took the form of continuous ribs, as the Withdrawing of the center pin did not break the continuity of the ,ribs.

After considerable experiment, I have found that a radiant provided (in the preferably solid back) with studs, nipples, or pointed projections, is more efficient than ribs, although lateral ribs, as against vertical ribs, may be employed. 7 I I have also found that the highest efficiency is attained with projections, or the like, increasing in size, i. e., as to distance, they project into the interior of the radiant as they get farther away. from the burner. My object is, therefore, to devise means to enable me to constructa radiant in one piece without joints, the construction being that hereinbefore describe-d as a result of my experiments, such means permitting of one or several columns of .fuel in one piece,

whether such radiant be straight or curved.

In describing my invention'in detail, reference is made to the accompanying sheets of drawings, in which:

Fig. 1 represents a sectional elevation of a mold adapted to make a curved radiant with my improvement added thereto;

Fig. 2 is a side elevation of the 'molds with the plates in position; v

Fig. 3 is a planview of the center plate having depressions;

Fig. 3* is an edge 'view of the plate shown in Fig. 3; r

Fig. 4 is a plan View of the locking plate;

g P is aside view of the locking plate;

Fig. 5 is an end view of the two molds and plates in position. 1

In carrying my invention into effect, I will describe and will show the same as applied to a curved radiant of three sections, the curve naturally presenting more diliiculties than a straight one. I wish it to be understood,.however, that I may apply my invention to straight or curved radiants, whether in single or. multiple form. I may also vary the method of operating the molds and center plates as long as there is present the plurality of center plates with suitable molds. c

In the first place, I employ what I term a face mold A, in which is formed any suitable pattern. On this'mold is laid a suitable thickness of clay, or other suitable material. On the clay, or like, is placed the locking plate C, which is of a suitable thickness. 7 Over this plate is placed another plate O, which has its uppermost face provided with a series of depressions, or longitudinal cuts, P, of suitable configuration, and, where desired, of varying depth, or size. Over this plate O is placed another layer of clay, or the like, and the mold is completed by the back mold A, which may be constructed to give a perforated, semi-perforated, or solid, back, as desired. The plates O and C have suitable handles, and a space is left between the two molds for the handles to project. The other, or outer, ends may project through a similar aperture, or space, in the other, or 0pposite, side of the molds.

The shoulders of the plates are held firmly in position within the molds by suitable means, such as blocks, or stops. In the form shown, the locking plate 0 has a shoulder C" formed to receive the shoulder of the center plate C. The blocks, or stops, may bear against the outer portion of such shoulder.

Pressure is then applied to the mold and the fuel is thereby formed in one piece of clay to be kilned after drying. The locking plate C, the shoulder-retaining device having been removed, is then withdrawn from under the projection center plate G, which allows said plate to drop, or be moved, into the space previously occupied by the locking plate C, leaving the projections formed in the back of the radiant. The center plate C is withdraavn in the same manner as the lockingplate C without disturbing the projections.

The means, hereinbefore described, permit me to make a radiant in one piece, said radiant ha ving suitable projections on the back as opposed to vertical. ribs. The radiant may be made straight or curved, the molds and the plates being constructed to suit.

In the form shown, the plates and molds are adapted to form three columns of fuel in one piece, divisions C and G being formed in the plates C and G for the reception of the clay to form side, or division walls. As it is desirable to form the division walls of the fuel I provide, in the molds, suitable upstanding projections, such as B,

which are adapted to enter the divisions C and C and so form the desired gaps.

To insure the plates taking the correct position in the moldfduring pressure, I extend the ends C and. C of the plates C and C, as shown. I also provide upstanding,

or depending, guides D in the molds (Fig.

5). The projections B serve, to some 0X7 tent, to insure the plates taking their correct positions. hen desired, projection center plates may be employed on each side of the locking plate, and the radiants may have projections on the inside faces of both the back and the front.

I wish it to be understood that I may vary the form of projections, or lateral ribs, without departing from the essential features of the invention, and I do not confine myself to any particular pattern of radiant, or form of mold for same. I may vary the arrangement of molds as long as I employ the locking plate and projection plate, or

plates.

I claim:

1. Inthe manufacture of jointless radiants, the combination of a face mold; a back mold; projections on one of said molds; and two plates located between said molds, one oi: said plates having a series of depressions, both plates being slotted longitudinally to receive the projections of the mold, so that one plate after the other can be removed from the mold after the radiant has been cast.

2. In the manufacture of joiiitless radiants, theco'mbination of a face mold and a back mold; two plates located side by side and between the two molds, each plate being slotted longitudinally, one of said plates having depressions, the molds having projections extending into the slots; and means for locking the molds and plate in alignment, the plates being so formed that one plate after the other can be removed from the space between the molds.

3. The combination of a face mold; a back mold, the opposed faces of the molds being curved; projections on one of said molds; and two curved plates located between the molds, one of said plates having a series of depressions, both plates being slotted to receive the projeetionsof the moldso that one plate atterthe other can be removed from the space between the molds after the article has been cast;

WALTER AUDAERWILSON 

